Ashlee Simpson & Pete Wentz's Rock 'n' Romance

Just three years ago, Ashlee Simpson was singing about slacker boyfriends on her hit "L.O.V.E." She's since changed her tune. Earlier this month, Simpson's boyfriend, Fall Out Boy bassist Pete Wentz, proposed to the 23-year-old singer. And now the twosome, one of PEOPLE's Most Beautiful couples, are expecting their first child. But what's life really life for the couple when they step off the stage? Find out what it's like to share a bathroom, what Ashlee does that really turns him on and more in these exclusive outtakes from their PEOPLE interview!

On Their Instant Attraction

Ashlee Simpson: "The first day that we met we were attracted to each other."Pete Wentz: "We were dating other people [but] we were actually good. Neither one of us did anything." AS: "Yeah, we were good."PW: "I was into everything about her." AS: "He's a cutie, of course, and he has an awesome personality and kind of brings out the best of me, and I knew that even before we were dating. There was just like an awesome connection we had."

On Ashlee's Red Hair

PW: "The red hair – I think it's awesome!" AS: "Thanks, babe." PW: "I had a super Jessica Rabbit crush when I was little. She had red hair like you."

On Being 'High Maintenance'

PW: "I set a point to be high maintenance a couple of years ago." AS: "I would say if there's one of us that was more [high maintenance], it would be me." PW: "But at the same time, if she comes out on tour with me, she doesn't have a makeup artist. AS: "I learned to pack his bags and my bags." PW: "She's kind of like a super-assistant that you can have sex with."

On the Benefits of Sharing a Bathroom:

PW: "Sharing a bathroom with a girl is awesome 'cause I'm just like, 'Oh I'll try this thing.' I honestly don't really know what most of the stuff I use is. I did a facial [mask] today. I think the eye hole went over my nose. I don't buy those kinds of products [as gifts for Ashlee] cause I'm nervous I'm gonna screw up – she likes La Mer only." AS: "You buy me good jewelry. And you bought me a good Dior bag the other day that I loved." PW: "I was spending a lot of money at Dior so I kind of like –" AS: "You were like, 'I feel guilty! I'll get something for her.' He's the best at surprising me. He always does little things here and there that surprise me."

On the Infamous 'Guyliner' Look

PW: "I don't really wear it anymore. The culmination of it was [when I was in the] PEOPLE [World's Most Beautiful People ] last year. And it was like, 'Oh, everybody expects me to wear eyeliner all the time.' So I was like, 'Maybe I should.' I like how my eyes look with eyeliner, but everyone was like, 'There's the eyeliner and the guy that goes with the eyeliner!' and I was like, 'Alright.' Maybe I should just go against what people think." AS: "It's good if a guy can look good with it or without it. That's why you're good-looking, babe. You don't need anything." PW: "I also happened to wear red eyeshadow as eyeliner and people would just, like 100 percent of the time, were like, 'Ah he looks really sick.' Like, that's the only response." AS: "I like it, though. I think it's pretty." PW: "I like how it looks. I feel like it's kind of looks like you have a fever of 106º!"